May I borrow your computer?—Sorry, it is ________ at the moment

I think ______ is necessary ______us to do something useful to protect the birds.

few people, ______ have come to askfor the question, ______fit for the job.

______ after a long walk, Mike called and said hecouldn’t come to the party.

isit from your home to your school—It takes about twenty minutes by bike.